[][src]Struct tracing_core::dispatcher::Dispatch

pub struct Dispatch { /* fields omitted */ }

Dispatch trace data to a Subscriber.

Implementations

impl Dispatch[src]

pub fn none() -> Self[src]

Returns a new Dispatch that discards events and spans.

pub fn new<S>(subscriber: S) -> Self where
    S: Subscriber + Send + Sync + 'static, 
[src]

Returns a Dispatch that forwards to the given Subscriber.

pub fn register_callsite(
    &self,
    metadata: &'static Metadata<'static>
) -> Interest
[src]

Registers a new callsite with this subscriber, returning whether or not the subscriber is interested in being notified about the callsite.

This calls the register_callsite function on the Subscriber that this Dispatch forwards to.

pub fn new_span(&self, span: &Attributes<'_>) -> Id[src]

Record the construction of a new span, returning a new ID for the span being constructed.

This calls the new_span function on the Subscriber that this Dispatch forwards to.

pub fn record(&self, span: &Id, values: &Record<'_>)[src]

Record a set of values on a span.

This calls the record function on the Subscriber that this Dispatch forwards to.

pub fn record_follows_from(&self, span: &Id, follows: &Id)[src]

Adds an indication that span follows from the span with the id follows.

This calls the record_follows_from function on the Subscriber that this Dispatch forwards to.

pub fn enabled(&self, metadata: &Metadata<'_>) -> bool[src]

Returns true if a span with the specified metadata would be recorded.

This calls the enabled function on the Subscriber that this Dispatch forwards to.

pub fn event(&self, event: &Event<'_>)[src]

Records that an Event has occurred.

This calls the event function on the Subscriber that this Dispatch forwards to.

pub fn enter(&self, span: &Id)[src]

Records that a span has been can_enter.

This calls the enter function on the Subscriber that this Dispatch forwards to.

pub fn exit(&self, span: &Id)[src]

Records that a span has been exited.

This calls the exit function on the Subscriber that this Dispatch forwards to.

pub fn clone_span(&self, id: &Id) -> Id[src]

Notifies the subscriber that a span ID has been cloned.

This function must only be called with span IDs that were returned by this Dispatch's new_span function. The tracing crate upholds this guarantee and any other libraries implementing instrumentation APIs must as well.

This calls the clone_span function on the Subscriber that this Dispatch forwards to.

pub fn drop_span(&self, id: Id)[src]

👎 Deprecated since 0.1.2:

use Dispatch::try_close instead

Notifies the subscriber that a span ID has been dropped.

This function must only be called with span IDs that were returned by this Dispatch's new_span function. The tracing crate upholds this guarantee and any other libraries implementing instrumentation APIs must as well.

This calls the drop_span function on the Subscriber that this Dispatch forwards to.

⚠ ️Warning
Deprecated: The try_close
method is functionally identical, but returns true if the span is now closed.
It should be used instead of this method.

pub fn try_close(&self, id: Id) -> bool[src]

Notifies the subscriber that a span ID has been dropped, and returns true if there are now 0 IDs referring to that span.

This function must only be called with span IDs that were returned by this Dispatch's new_span function. The tracing crate upholds this guarantee and any other libraries implementing instrumentation APIs must as well.

This calls the try_close function on the Subscriber that this Dispatch forwards to.

pub fn current_span(&self) -> Current[src]

Returns a type representing this subscriber's view of the current span.

This calls the current function on the Subscriber that this Dispatch forwards to.

pub fn is<T: Any>(&self) -> bool[src]

Returns true if this Dispatch forwards to a Subscriber of type T.

pub fn downcast_ref<T: Any>(&self) -> Option<&T>[src]

Returns some reference to the Subscriber this Dispatch forwards to if it is of type T, or None if it isn't.

Trait Implementations

impl Clone for Dispatch[src]

impl Debug for Dispatch[src]

impl Default for Dispatch[src]

pub fn default() -> Self[src]

Returns the current default dispatcher

impl<S> From<S> for Dispatch where
    S: Subscriber + Send + Sync + 'static, 
[src]

Auto Trait Implementations

impl !RefUnwindSafe for Dispatch[src]

impl Send for Dispatch[src]

impl Sync for Dispatch[src]

impl Unpin for Dispatch[src]

impl !UnwindSafe for Dispatch[src]

Blanket Implementations

impl<T> Any for T where
    T: 'static + ?Sized
[src]

impl<T> Borrow<T> for T where
    T: ?Sized
[src]

impl<T> BorrowMut<T> for T where
    T: ?Sized
[src]

impl<T> From<T> for T[src]

impl<T, U> Into<U> for T where
    U: From<T>, 
[src]

impl<T> ToOwned for T where
    T: Clone
[src]

type Owned = T

The resulting type after obtaining ownership.

impl<T, U> TryFrom<U> for T where
    U: Into<T>, 
[src]

type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, 
[src]

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.